2019-09-10 13:32:51 -04:00
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[role="xpack"]
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2017-03-28 17:23:01 -04:00
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[[trigger]]
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2020-12-08 16:33:10 -05:00
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== {watcher} triggers
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++++
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<titleabbrev>Triggers</titleabbrev>
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++++
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2017-03-28 17:23:01 -04:00
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Every watch must have a `trigger` that defines when the watch execution process
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should start. When you create a watch, its trigger is registered with the
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appropriate _Trigger Engine_. The trigger engine is responsible for evaluating
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the trigger and triggering the watch when needed.
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{watcher} is designed to support different types of triggers, but only time-based
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2019-09-30 13:18:50 -04:00
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<<trigger-schedule,`schedule`>> triggers are currently available.
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2017-03-28 17:23:01 -04:00
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include::trigger/schedule.asciidoc[]
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